1. Industry overview
Rock wool is an inorganic material, which is mainly made of basalt. After high temperature melting, it is pulled into fiber by high speed centrifuge under centrifugal force. At the same time, a certain amount of binder is sprayed into it and a series of technological processes such as curing and cutting are adopted to produce an inorganic fiber product. It has excellent heat preservation, sound absorption, heat insulation, fire prevention, ventilation and other performance, and light, belongs to the new building materials. Rock wool products are internationally recognized as the "fifth conventional energy" in the main energy saving materials, each use of 1 square meters of rock wool products on the equipment for insulation, the average energy saving 10 000 kg/h, equivalent to the annual saving of 3 t standard coal. Every 1t of rock mineral wool used for insulation on the building can save at least 1t of oil energy in one year.
Rock wool products can be divided into board, felt, belt, seam felt, pipe, strip and other products, according to the characteristics of products, can be widely used in petroleum, chemical, electric power, metallurgy, construction, transportation, agriculture and other fields.
2. Development status of rock wool in China
China's rock wool manufacturing industry started late, and the domestic penetration rate was less than 10 years. In the early years, it was mainly to produce low-end mineral wool. China began to introduce mineral wool production technology in the late 1950s, and only began to form an industry in the late 1970s. The 1980s can be said to be the great leap forward years in the development history of China's mineral wool industry. Both production scale and production technology have made great progress. The main reason is that China has introduced more than 10 mineral wool production lines of different styles and sizes from 6 countries, thus laying the foundation for the development of China's rock wool.
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